<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="/js/vue.js"></script>
    <style>
        #app{
            width:800px;
            margin: 20px auto;
        }
        h2{
            text-align: center;
        }
        .tabs{
            display: flex;
            margin-bottom: 20px;
        }
        .tab{
            cursor: pointer;
            margin-right: 20px;
            border: 1px solid;
            width: 80px;
            height: 40px;
            line-height: 40px;
            text-align: center;
            font-size: 20px;
        }
        .focus{
            background: rgb(162,131,116);
            color: #fff;
        }
        .book{
            display: flex;
            flex-direction: column;
            align-items: center;
            width: 160px;
        }
        .book-name{
            margin-top: 10px;
            height: 42px;
        }
        .book-price{
            color: red;
        }
        .books{
            display: flex;
            justify-content: space-between;
        }
    </style>
</head>
<body>
    <div id ="app">
      <h2>每日精选</h2>
      <div class="tabs">
        <div class="tab focus" @mouseenter="changeBooks('hot',$event)">热销</div>
        <div class="tab"@mouseenter="changeBooks('tec',$event)">科技</div>
      </div>
      <book-list :list="list"></book-list>
    </div>
</body>
<script type="text/x-template"id="book">
    <div class="book">
        <img class="book-pic":src="book.pic"width="160">
        <div class="book-name">{{book.name}}</div>
        <div class="book-price">￥{{book.price}}</div>
</script>
<script type="text/x-template"id="book-list">
<div class="books">
    <book v-for="item in list" :book="item"></book>
</div>
</script>
<script>
    Vue.component('book',{
        template:'#book',
        props:['book']
    })
    Vue.component('book-list',{
        template:'#book-list',
        props:['list']
    })
 let app =new Vue({
    el:"#app",
    data:{
    books:{
        hot:[{
            name:'周大新：安魂',
            price:'26.90',
            pic:'ah.Webp'
        },
    {
        name:'开端',
        price:'49,80',
        pic:'kd.Webp',
    },
    {
        name:'长岛小记',
        price:'33.80',
        pic:'cdxj.Webp',
    },{
        name:'沙丘全套 六部曲',
        price:'394.90',
        pic:'sq.Webp',
    }
    ],
    tec:[{
        name:'C Primer Plus',
        price:'76.20',
        pic:'c.Webp',
    },
    {
        name:'Linux就该这么学',
        price:'94.60',
        pic:'linux.Webp',
    },
    {
        name:'关于火星的一切',
        price:'39.40',
        pic:'linux.Webp',
    },
    {
        name:'植物的战斗',
        price:'49.00',
        pic:'zw.Webp',
    }
    ]
    },
    list:[]
    },
    methods:{
        changeBooks:function(type,event){
            this.list=this.books[type]
            let tabs=document.querySelectorAll('.tab')
            for(let i=0;i<tabs.length;i++){
                tabs[i].classList.remove('focus')
            }
            let tab=event.target
            tab.classList.add('focus')
        }

    },
    mounted(){
        this.list=this.books['hot']
    }
    })
</script> 

</html>